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Mathematics, 13.10.2019 08:30 ronniethefun
Sonji went to a sandwich shop for lunch with 8 of her friends. part of the group ordered only a sandwich for $5, and the rest of the group ordered a combo for $8. the bill for all 9 people totaled $66.00. which system of equations represents the number of meals of each type that sonji and her friends purchased?
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Mathematics, 21.06.2019 15:20
Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?
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Mathematics, 21.06.2019 16:30
Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done
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Sonji went to a sandwich shop for lunch with 8 of her friends. part of the group ordered only a sand...
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